Underinflation alarm method, underinflation alarm device, and vehicle

Abstract

The application discloses a tire underpressure alarm method, a tire underpressure alarm device and a vehicle. The tire underpressure alarm method comprises the following steps: waking up a tire pressure controller after the vehicle is powered on, and acquiring the speed of the vehicle; judging the relationship between the speed of the vehicle and a preset speed; when the speed is less than the preset speed, using a first threshold as an underpressure alarm threshold; when the speed is greater than or equal to the preset speed for the first time, using a second threshold as the underpressure alarm threshold; when the tire pressure detected by the tire pressure controller is less than the underpressure alarm threshold, the tire pressure controller alarms. In this way, by detecting and monitoring the speed of the tire when the vehicle is running and judging that the tire is in different stages, the alarm threshold is adjusted, so that the alarm threshold of the tire can be updated according to the running speed of the tire, and the underpressure alarm accuracy of the tire is higher.

Description

Technical Field

[0001] This invention relates to the field of vehicle inspection technology, and in particular to a tire under-pressure alarm method, an under-pressure alarm device, and a vehicle. Background Technology

[0002] In related technologies, it is necessary to monitor the tire pressure of a vehicle and issue an alarm when the tire pressure is lower than an alarm threshold. However, existing technologies commonly use a fixed threshold as the alarm threshold. This type of alarm threshold setting is rather rigid and cannot be dynamically updated based on the actual usage of the vehicle's tires. As a result, the tire monitoring alarm becomes out of touch with the actual usage of the vehicle, thus reducing the accuracy of the low tire pressure alarm. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of the present invention is to provide a tire underpressure alarm method that provides a more accurate and reliable tire underpressure alarm.

[0004] Another object of the present invention is to provide a tire underpressure alarm device, which is applicable to the underpressure alarm method.

[0005] Another object of the present invention is to provide a vehicle in which a tire underpressure alarm method as described above is used.

[0006] The tire underpressure alarm method according to an embodiment of the present invention includes the following steps:

[0007] After the vehicle is powered on, the tire pressure controller is activated and the vehicle's speed is obtained;

[0008] Determine the relationship between the vehicle's speed and the preset speed:

[0009] When the speed is less than the preset speed, the first threshold is used as the undervoltage alarm threshold;

[0010] Once the speed is greater than or equal to the preset speed for the first time, the second threshold is used as the undervoltage alarm threshold.

[0011] The tire pressure controller will issue an alarm when the tire pressure detected by the tire pressure controller is lower than the underpressure alarm threshold.

[0012] According to the tire underpressure alarm method of the present invention, the tire speed is detected and monitored during vehicle operation and the tire is determined to be in different stages, so as to adjust the alarm threshold. This allows the tire alarm threshold to be updated according to the tire's running speed, thereby making the tire underpressure alarm more accurate.

[0013] In some embodiments, the first threshold is the product of the recommended tire pressure value and the safety ratio factor.

[0014] In some embodiments, the second threshold is the product of the warm tire pressure (Pwarm) value and the safety ratio coefficient; the warm tire pressure (Pwarm) value is obtained in the following manner: the warm tire pressure (Pwarm) value is updated according to the current tire pressure value according to a preset calculation method, and the initial value of the warm tire pressure (Pwarm) value is the recommended tire pressure value.

[0015] In some embodiments, the tire pressure Pwarm value is updated according to the preset calculation method:

[0016] The preset calculation method includes: comparing the current tire pressure value received each time with the current Pwarm value; if the current tire pressure value is greater than the current Pwarm value, then the Pwarm value is updated to the current tire pressure value; otherwise, the Pwarm value is not updated.

[0017] In some embodiments, the tire pressure Pwarm value is also updated according to the following preset calculation method:

[0018] The preset calculation method also includes: comparing the current tire pressure value with the recommended tire pressure value: if the current tire pressure value is greater than the recommended tire pressure value, then the current tire pressure value is updated to the Pwarm value; if the current tire pressure value is less than or equal to the recommended tire pressure value, then the recommended tire pressure value is updated to the Pwarm value.

[0019] In some embodiments, the following steps are also included:

[0020] Determine if a vehicle is in a armed state:

[0021] After the vehicle enters the armed state for a second preset time, the tire pressure Pwarm value is cleared, or;

[0022] After the vehicle enters the armed state for a second preset time, the tire pressure Pwarm value is restored to its initial value.

[0023] In some embodiments, the following steps are also included:

[0024] Determine if the tire pressure controller has entered sleep mode:

[0025] After the tire pressure controller enters sleep mode, the Pwarm tire pressure value is cleared.

[0026] In some embodiments, the following steps are also included:

[0027] Determine if the tire pressure controller has entered sleep mode:

[0028] After the tire pressure controller enters sleep mode, the Pwarm tire pressure value is restored to its initial value.

[0029] According to an embodiment of the present invention, a tire underpressure alarm device includes: a tire and a tire pressure controller, wherein the tire pressure controller is configured to detect the tire pressure of the tire, and to issue an alarm when the tire pressure is less than an underpressure alarm threshold; wherein the underpressure alarm threshold is one of a first threshold and a second threshold, wherein when the speed is less than a preset speed, the first threshold is used as the underpressure alarm threshold; and when the speed is greater than or equal to the preset speed for the first time, the second threshold is used as the underpressure alarm threshold.

[0030] The tire underpressure alarm device according to an embodiment of the present invention uses a first threshold or a second threshold as the tire underpressure alarm threshold so that the setting of the underpressure alarm threshold can meet the vehicle's operating state under various conditions, thereby making the vehicle's underpressure alarm more accurate and reliable.

[0031] The vehicle according to an embodiment of the present invention employs a tire underpressure alarm device as described in any of the preceding claims.

[0032] According to embodiments of the present invention, by using the tire underpressure alarm device as shown above inside the vehicle, the tire pressure controller can detect the tire's operating status during vehicle operation and adjust the underpressure alarm threshold in a timely manner based on the tire's operating status, thereby making the vehicle's underpressure alarm threshold more accurate, ensuring user safety, and improving vehicle safety.

[0033] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0034] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0035] Figure 1 This is a flowchart illustrating the tire underpressure alarm method according to an embodiment of the present invention.

[0036] Figure 2 This is a flowchart illustrating the calculation method of the Pwarm tire pressure value according to an embodiment of the present invention. Detailed Implementation

[0037] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0038] The following is for reference. Figures 1-2A method for detecting under-inflation of a vehicle tire according to an embodiment of the present invention includes the following steps:

[0039] After the vehicle is powered on, the tire pressure controller is activated and the vehicle's speed is obtained;

[0040] Determine the relationship between the vehicle's speed and the preset speed:

[0041] When the speed is less than the preset speed, the first threshold is used as the undervoltage alarm threshold;

[0042] Once the speed is greater than or equal to the preset speed for the first time, the second threshold is used as the undervoltage alarm threshold.

[0043] The tire pressure controller will issue an alarm when the tire pressure detected by the tire pressure controller is lower than the underpressure alarm threshold.

[0044] It is understood that in the tire underpressure alarm method used in the embodiments of the present invention, the underpressure alarm threshold is updated in different ways according to the different speeds of the vehicle, so that the setting of the underpressure alarm threshold of the tire pressure controller is more in line with the actual use of the vehicle, and the underpressure alarm of the vehicle is more accurate and reliable.

[0045] According to the tire underpressure alarm method of the present invention, the tire speed is detected and monitored during vehicle operation and the tire is determined to be in different stages, so as to adjust the alarm threshold. This allows the tire alarm threshold to be updated according to the tire's running speed, thereby making the tire underpressure alarm more accurate.

[0046] In some embodiments, the first threshold is the product of the recommended tire pressure value and the safety ratio coefficient, and the second threshold is the product of the warm tire pressure Pwarm value and the safety ratio coefficient; the warm tire pressure Pwarm value is updated according to the current tire pressure value according to a preset calculation method, and the initial value of the warm tire pressure Pwarm value is the recommended tire pressure value.

[0047] Specifically, the safety ratio coefficient can be 80%, meaning that the first threshold can be 80% of the recommended tire pressure value, and the second threshold can be 80% of the warm tire pressure (Pwarm) value. By setting the safety ratio coefficient, when selecting the first and second thresholds, the selection range of the first and second thresholds can be reduced by multiplying the recommended tire pressure value by the safety ratio coefficient and the warm tire pressure (Pwarm) value by the safety ratio coefficient, thereby improving the safety of the tire underpressure alarm method when in use.

[0048] Specifically, the warm-up tire pressure Pwarm value is updated according to the following preset calculation method, and the initial value of the warm-up tire pressure Pwarm value is the recommended tire pressure value.

[0049] It is understandable that the vehicle's driving time and speed have a significant impact on the tire pressure Pwarm value during the tire warming process. Therefore, when using the tire underpressure alarm method of this invention, the impact of time and vehicle speed on tire usage needs to be considered to make the tire underpressure alarm method more reliable in its use.

[0050] In some embodiments, the tire pressure Pwarm value is updated according to a preset calculation method: the preset calculation method includes: comparing the current tire pressure value received each time with the current Pwarm value; if the current tire pressure value is greater than the current Pwarm value, then the Pwarm value is updated to the current tire pressure value; otherwise, the Pwarm value is not updated.

[0051] Specifically, the vehicle is first powered on to start it. Then, a speed measuring device or other equipment monitors the vehicle's speed and determines its current stage based on the monitoring results. If the detected speed is lower than a preset speed, it indicates that the vehicle's operating speed is low, the tires are not warmed up sufficiently, and the tire condition is relatively poor. Therefore, a first threshold can be used as the under-pressure alarm threshold; an alarm is triggered when the tire pressure falls below this threshold.

[0052] When the detected current speed is greater than or equal to the preset speed, it indicates that the vehicle's operating speed is relatively high, the tires are warmed up, and the tire condition is relatively good. Therefore, the second threshold can be used as the threshold for the under-pressure alarm; an alarm will be triggered when the tire pressure is below the second threshold.

[0053] Meanwhile, since the tires are in different warm-up conditions at different vehicle speeds, the Pwarm tire pressure value can be updated based on the vehicle's operating time. The specific update process is as follows:

[0054] If the vehicle's warm tire pressure is not updated, the vehicle's warm tire pressure Pwarm value will be set to the recommended tire pressure value by default, and the first threshold value will be used as the underpressure alarm threshold.

[0055] Since the vehicle's speed is greater than the preset speed, the tire pressure of the vehicle's tires can be detected in real time, and the current tire pressure value is compared with the current warm tire pressure (Pwarm) value. If the current tire pressure value is greater than the current warm tire pressure (Pwarm) value, the current Pwarm value is updated to the current tire pressure value; if the current tire pressure value is less than or equal to the current warm tire pressure (Pwarm) value, the warm tire pressure (Pwarm) value is not updated.

[0056] Understandably, the current tire pressure value is suitable for reflecting the current tire usage, the warm-up tire pressure value is suitable for reflecting the tire pressure at which the tire can operate safely at the current speed, and the recommended tire pressure value is suitable for reflecting the tire pressure set for safe operation after the tire was manufactured. Thus, by comparing the currently detected tire pressure value with the tire pressure value that allows for safe operation at the current speed, and assigning the larger of the two to the recommended tire pressure value, real-time monitoring and updates are achieved during tire operation. This ensures that the tire underpressure alarm threshold more closely reflects the tire's usage condition, thereby making tire operation safer.

[0057] In some embodiments, such as Figure 2 As shown, the tire pressure Pwarm value is also calculated according to the following preset calculation method:

[0058] The preset calculation method also includes: comparing the current tire pressure value with the recommended tire pressure value: if the current tire pressure value is greater than the recommended tire pressure value, the current tire pressure value is updated to the Pwarm value; if the current tire pressure value is less than or equal to the recommended tire pressure value, the recommended tire pressure value is updated to the Pwarm value.

[0059] Understandably, during the use of the tire pressure under-inflation alarm method, the current tire pressure value can be detected and compared with the recommended tire pressure value. If the current tire pressure value is greater than the recommended tire pressure value, it means that the under-inflation alarm threshold needs to be updated, and the current tire pressure value is updated to the warm tire pressure (Pwarm) value. If the current tire pressure value is less than or equal to the recommended tire pressure value, it means that the tire may be aging or damaged, or that the tire pressure value is low due to the poor operating environment temperature of the tire, and the recommended tire pressure value is updated to the warm tire pressure (Pwarm) value.

[0060] Specifically, in the actual use of the tire underpressure alarm method of the present invention, a first preset time period can be used to determine and update the tire pressure warning value. This ensures the accuracy of the tire pressure warning value, reduces the number of judgments, saves resources, and lowers operating costs.

[0061] In some specific embodiments, the first preset time is t, where t satisfies the relationship: 0.5h ≤ t ≤ 2h. It is understood that setting the first preset time between 0.5h and 2.0h ensures that the undervoltage alarm threshold is updated reliably and meets the requirements, while also avoiding resource waste and reducing the update cost of the undervoltage alarm threshold.

[0062] In some embodiments, such as Figure 2 As shown, the tire under-pressure alarm method also includes the following steps:

[0063] To determine if the vehicle is in armed mode: After the vehicle has been in armed mode for a second preset time, clear the tire warming pressure (Pwarm) value, or restore the tire warming pressure (Pwarm) value to its initial value after the vehicle has been in armed mode for a second preset time. This clearing or restoring the tire warming pressure (Pwarm) value to its initial value after the vehicle has been in armed mode for the second preset time ensures that the tires will be underinflated when the vehicle is used again.

[0064] In some specific embodiments, the second preset time is t2, where t2 satisfies the relationship: 3min ≤ t2 ≤ 7min. It is understood that the second preset time should not be too long or too short. If the second preset time is too short, the tire detection alarm will stop too quickly, making it inconvenient to detect tire underpressure. If the second preset time is too long, the tire underpressure alarm threshold will still be detected and updated when the vehicle is not in use, resulting in wasted resources. Therefore, the second preset time can be set between 3min and 7min, so that the update of the tire underpressure alarm threshold stops after the vehicle enters the armed state for the second preset time, thus saving resources.

[0065] In some specific embodiments, the tire underpressure alarm method further includes the following steps: determining whether the tire pressure controller has entered a sleep state; if the tire pressure controller enters a sleep state, clearing the warm tire pressure Pwarm value, or restoring the warm tire pressure Pwarm value to its initial value. It is understood that, to facilitate tire detection during subsequent vehicle startup, the warm tire pressure Pwarm value can be cleared or restored to its initial value after the tire pressure controller enters a sleep state, so that after the tire cools down, it is suitable to update the tire underpressure alarm threshold, thereby ensuring that the detection and updating of the tire underpressure alarm threshold meets the needs of tire usage.

[0066] In some embodiments, the preset speed is V1, where V1 satisfies the relationship: V1 < 80 km / h. Thus, by setting the preset speed to less than 80 km / h, when the vehicle's operating speed is lower than the preset speed, the tire pressure value of the vehicle's tires is relatively low during operation, and the change in tire pressure value during operation is relatively small. Therefore, when the tire speed is lower than the preset speed, a first threshold is set as the underpressure alarm threshold. When the tire speed is greater than the preset speed, a second threshold can be used as the underpressure alarm threshold, and the tire is detected and an alarm is triggered. Since the vehicle's tire operation is better when the vehicle's operating speed is greater than or equal to the preset speed, the underpressure alarm threshold can be updated, and the tire pressure controller's detection of the tires meets the requirements of the warm-up tire pressure (Pwarm) value, thereby making the underpressure alarm method more accurate and reliable.

[0067] A tire underpressure alarm device according to an embodiment of the present invention includes: a tire and a tire pressure controller.

[0068] Specifically, the tire pressure controller is configured to detect the tire pressure of the vehicle tires, and when the tire pressure is lower than the underpressure alarm threshold, the tire pressure controller will sound an alarm; wherein the underpressure alarm threshold is one of a first threshold and a second threshold.

[0069] Understandably, during the construction of a tire pressure controller, it is appropriate to include an underpressure alarm threshold. When the tire pressure detected by the tire pressure controller is lower than the underpressure alarm threshold, the tire pressure controller is appropriate to issue an alarm.

[0070] In actual vehicle use, the tire underpressure alarm threshold varies depending on the vehicle's speed. Therefore, the underpressure alarm threshold set in the tire pressure controller needs to be updated to accommodate different tire usage conditions. For example, a first threshold or a second threshold can be used as the tire underpressure alarm threshold to ensure that the setting meets the vehicle's operating requirements.

[0071] The tire underpressure alarm device according to an embodiment of the present invention uses a first threshold or a second threshold as the tire underpressure alarm threshold so that the setting of the underpressure alarm threshold can meet the vehicle's operating state under various conditions, thereby making the vehicle's underpressure alarm more accurate and reliable.

[0072] In some embodiments, when the speed is less than a preset speed, a first threshold is used as the undervoltage alarm threshold; when the speed is greater than or equal to the preset speed for the first time, a second threshold is used as the undervoltage alarm threshold.

[0073] Understandably, when the detected current speed is lower than the preset speed, it indicates that the vehicle's operating speed is low, and the tires' operating condition is insufficient to meet the warm-up requirements. Therefore, a first threshold can be used as the under-pressure alarm threshold; an alarm will be triggered when the tire pressure falls below the first threshold. Conversely, when the detected current speed is greater than or equal to the preset speed, it indicates that the vehicle's operating speed is high, and the tires' operating condition meets the warm-up requirements. Therefore, a second threshold can be used as the under-pressure alarm threshold; an alarm will be triggered when the tire pressure falls below the first threshold.

[0074] According to embodiments of the present invention, by using the tire underpressure alarm device as shown above inside the vehicle, the tire pressure controller can detect the tire's operating status during vehicle operation and adjust the underpressure alarm threshold in a timely manner based on the tire's operating status, thereby making the vehicle's underpressure alarm threshold more accurate, ensuring user safety, and improving vehicle safety.

[0075] Other configurations and operations of the vehicle according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0076] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0077] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A method for alarming low tire pressure, characterized in that, Includes the following steps: After the vehicle is powered on, the tire pressure controller is activated and the vehicle's speed is obtained; Determine the relationship between the vehicle's speed and the preset speed: When the speed is less than the preset speed, the first threshold is used as the undervoltage alarm threshold; Once the speed is greater than or equal to the preset speed for the first time, the second threshold is used as the undervoltage alarm threshold. When the tire pressure detected by the tire pressure controller is lower than the underpressure alarm threshold, the tire pressure controller will issue an alarm. Determine if a vehicle is in a armed state: After the vehicle enters the armed state for a second preset time, the Pwarm tire pressure value is cleared.

2. The tire underpressure alarm method according to claim 1, characterized in that, The first threshold is the product of the recommended tire pressure value and the safety ratio coefficient.

3. The tire underpressure alarm method according to claim 1, characterized in that, The second threshold is the product of the warm tire pressure (Pwarm) value and the safety ratio factor; The warm tire pressure (Pwarm) value is updated according to a preset calculation method based on the current tire pressure value, and the initial value of the warm tire pressure (Pwarm) value is the recommended tire pressure value.

4. The tire underpressure alarm method according to claim 3, characterized in that, The tire pressure Pwarm value is updated according to the preset calculation method: The preset calculation method includes: comparing the current tire pressure value received each time with the current Pwarm value; if the current tire pressure value is greater than the current Pwarm value, then the current Pwarm value is updated to the current tire pressure value; otherwise, the Pwarm value is not updated.

5. The tire underpressure alarm method according to claim 4, characterized in that, The tire pressure Pwarm value is also updated according to the following preset calculation method: The preset calculation method also includes: comparing the current tire pressure value with the recommended tire pressure value. If the current tire pressure is greater than the recommended tire pressure, then update the current tire pressure to the Pwarm value; If the current tire pressure is less than or equal to the recommended tire pressure, the recommended tire pressure will be updated to the Pwarm value.

6. The tire underpressure alarm method according to claim 1, characterized in that, It also includes the following steps: Determine if the tire pressure controller has entered sleep mode: After the tire pressure controller enters sleep mode, the Pwarm tire pressure value is cleared.

7. The tire underpressure alarm method according to claim 1, characterized in that, It also includes the following steps: Determine if the tire pressure controller has entered sleep mode: After the tire pressure controller enters sleep mode, the Pwarm tire pressure value is restored to its initial value.

8. A tire underpressure alarm device, wherein the tire underpressure alarm device is adapted to the tire underpressure alarm method according to any one of claims 1-7, characterized in that, include: Tires, and; A tire pressure controller configured to detect the tire pressure of the vehicle tire, and to issue an alarm when the tire pressure is lower than an underpressure alarm threshold; Wherein, the undervoltage alarm threshold is one of the first threshold and the second threshold; Once the speed is greater than or equal to the preset speed for the first time, the second threshold is used as the undervoltage alarm threshold.

9. A vehicle, characterized in that, include: The tire underpressure alarm device as described in claim 8 is used.

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